Gun



R. L. DEZENDORF March 18 1924.

GUN

lOriginal Filed June 30.

RICHARD LEE DEZENDOREF,

RICJIOND HELL, NEFF] YORK.

ecn.

Application led June 3G, 192), Serial No. 392,911. Renewed September 22, 1923.

To all fro/om maj/,f conce/Mt Be it known that I, Rio .Ann L. DuZnN- noni, a citizen ot the nited `States, residing at Richmond Hill, county oit Queens, and `State oit New vorlr, have invented a certain nw and uset'ul lmprovement in Guns, oi which the following is a full, clear, and exact description.

My invention relates to improvements in guns and has ior its object to provide a gun which may be made of fairly light weight and which when being discharged is substantially noiseless and lashless. It is adapted ttor throwing projectiles and particularly adapted for throwing grenades and the lille a considerable distance without attracting attention,

Tl, following is a description of an embodiment oi my invention, reference being had to the accompanying drawings, in which,

Fig. 1 shows a plan view of the gun, parts being in section so as to show the internal construction thereof;

Fig. 2 is asectional view on the line 2-2, Fig. 1.

Referring more particularly to the dra-wings, 1 is an expansion chamber having an explosion chamber 2 projecting therein and carried by a screw plug 3 adapted to receive a cartridge, rlhe tar end ci the expansion chamber is closed by a plug fl. 5 is a barrel adapted to receive at its inner end G a projectile The barrel 5 constitutes a projectile chamber and extends into a catch chamber 7, having a screw-threaded connection 8 with the barrel 5. 9-9 are trunnions connected to the expansion chamber 1 and the barrel 5, by which the gun may be supported if desired. The expansion chamber 1 is connected to the chamber 7 by pipes 11, 12 and 13, which pipes are also connected to a reservoir 111 closed by a. removable screw cap 15. To aid in reducing the noise when no liquid is used the perforated screen 11 may be used at the top of the pipe 11, rllhe connections 11, 12 and 13 form a trap 'for oil or other liquid between the expansion chamber 1 and the chamber 7. The bottom or" this trap is also between the explosion chamber and the reservoir 1K1, which is connected to the trap beyond its connection with the chamber 7, so that pressure in the expansion chamber tends to' force liquid from the trap into the reservoirl The casing of the chamber 7 is provided with an arm 16, to which is pivoted a movable link 17 carrying a breech-block 13 pivoted thereto at 19 and adapted to close the rfar end of the chamber 7 after the projectile has been introduced into the barrel 5. rlhe outer end of t-he arm 17 is provided with a ring 20, pivoted thereto and lying in a groove in a breech-block 21,which is adapted to be screwed upon the end of the plug 3 closing the rear end of the explosion chamber 2, and acting to hold the breech-block 18 in position, This breechblock is provided with afiring piin 23, which is adapted to be actuated by a hammer 2a, pivoted at 25 to an extension 2G "rom the breech-block 18.

1n using this gun the reservoir 14 is partially illed with some liquid lubricant, suchas oil, as indicated by the dotted line therein. This lubricant forms a seal for the lower end of thepipe 12 leading to the chamber 7. A projectile is placed within the inner end 6 of the barrel and a cartridge is inserted in the plug 22, as shown- The breech-bloclr 21 is then screwed upon the plug 22 so as to be held in place and at the same time hold the breech-block 18 securely within vthe end of the chamber 7. The gun is then discharged by causing the hammer 2li to'hit the firing pin 23.

As the gun is discharged the gases formed enter the expansion chamber 1 and exert a pressure therein which is transmitted through pipes 11, 12 and 13, to the chamber 7 where the gases further expand and, acting upon the projectile within the barrel 5, expel the same. The pressure from the expansion chamber 1 while being communi cated to the chamber 7 forces the oil which is in the connection 13 partially back into the reservoir 14 and partially through the connection 12 into the chamber 7 where some of it is caught while some of it is discharged through the barrel 5 together with the projectile- After the pressure has been relieved oil returns from the reservoir 14 so as to seal the lowerend of the connection 12, whereupon the gun may be reloaded and discharged again, the operation being repeated until the oil inthe reservoir 14 is used up.

The explosive charge used is preferably slow burningcellulose which, upon discharge, is substantially consumed, it being held in the far end of the expansion chamber until consumption. takes place, the opening from that chamber being in such position as not to aflord a ready exit for unconsumcd explosive. ln this way the full power ot the eX alosire charge is made use of. lllhile the push aside most oiq the lubricant, forcing it to return to the reservoir, seme of the lubricant follows the projectile and acts as a hydraulic cushion or packing, and also to lubricate the barrel 5. trs the lubricant returns from the reservoir it interferes with the movement of the gases so as to maire thc gun practically noiseless. Since substantiall;v complete consumption olE the charge place in the expansion chamber, the gun is substantiall).7 ashless ren when oil is not pres fnt in the reservoir or trap.

l prefer to connect the trap with the expansion cha `iber at a point to the rear of the discharge opening of the explosion or cartridge chamber, but this is not. necessary if the gun otherwise constructed so as to secure complete combustion et the explosive. rlhe trap between the explosion chamber 2 and the projectile chamber 6 is however necessanv to secure the desired results,

n swill Vbe evident to those skilled in the art invention permits of Various modifications without departing; from the spirit thereot or the scope of the appended claims.

ldlhat l claim is: Y

l. ln a gun, the combination of an eX- plosion chamber haring breech-block and a tiring pin, a projectile chamber, a connection between said chambers such that gases can pass from said explosion chamber to said projectile chamber, a trap for liquid in said connection such that liquid therein normally separates said two chambers and means for supplying` liquid to said trap independently of said chambers.

2. ln a Lgun, the combination of an eX- plosion chamber having;v a breech-block and a hiring pin, a projectile chamber, a connection between said ciambers such that can pass 'from said explosion chamber to said projectile chamber, a trap for liquid in said connection such that liquid therein irormall.7 separates said two chambers, an expansion chamber haring its front end connected to said explosion chamber and its rear end connected to said tra), and means for sup@lyingv liquid to said trap independently of said chambers.

in a gen, the combination ot :in explosion chamber having` a breech-block and a liring pin, a projectile chamber, a reservoir,

trap connected to said reservoir and located betwe n said explosion chamber and projectile chamber so that liquid therein normallj,v interrupts the connection between aid two chambers, and a chamber surrounding said projectile chamber and located between it and said trap.

i-. ln a gun, the combination of an explosion chamber hai/'ing` a breech-block and a tiring' ain, a projectile chamber, a reservoir, a trap between said explosion chamber and projectile chamber connected to said reservoir that liquid therein normallj7 interrupts thc connection between said two cha-mbers, breech-blocks for each of said chambers and common means for securing` bot-h o1" said breech-blocks.

5. ln gun, the combination o1 an explosion chamber, an expansion chamber connected thereto, a projectile chamber, a. trap connecting; said )rojectile chamber with said expansion chamber, reservoir connected to said trap beyond its connection with said projectile chamber, and breech-blocks for said chambers.

RCHARD LEE DEZENDORF. 

